There are no significant Insider Shareholders in IDEAYA Biosciences as of December 12, 2025.
| Holder | Position | Shares | Report Date |
|---|---|---|---|
| Yujiro S Hata | President And CEO | 690,695 | 19 Feb, 2025 |
| Partners L P/Il Bvf | 233,150 | 04 Feb, 2021 | |
| Michael P. Dillon | SVP And Chief Scientific Officer | 78,789 | 07 Oct, 2021 |
| Jason Throne | Chief Legal Officer | 63,484 | 27 Jun, 2024 |
| Briseno Andres Ruiz | 24,531 | 13 Feb, 2024 | |
| Paul A. Stone | Chief Financial Officer | 9,303 | 31 Aug, 2023 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 18 Feb, 2025 | Yujiro S Hata | Common Stock | A | 12,808 | $19.52 | 690,695 | D | M |
| 27 Jun, 2024 | Jason Throne | Common Stock | A | 6,424 | $13.34 | 16,424 | D | M |
| 27 Jun, 2024 | Jason Throne | - | - | 16,424 | D | |||
| 27 Jun, 2024 | Jason Throne | Common Stock | A | 47,060 | $7.01 | 63,484 | D | M |
| 27 Jun, 2024 | Jason Throne | - | - | 63,484 | D | |||
| 29 May, 2024 | Michael Anthony White | - | - | 28,500 | D | |||
| 29 May, 2024 | Michael Anthony White | Common Stock | A | 28,500 | $12.86 | 28,500 | D | M |
| 29 May, 2024 | Michael Anthony White | Common Stock | D | 27,649 | $36.23 | 851 | D | S |
| 29 May, 2024 | Michael Anthony White | - | - | 851 | D | |||
| 29 May, 2024 | Michael Anthony White | - | - | 0 | D | |||
| 29 May, 2024 | Michael Anthony White | Common Stock | D | 851 | $36.78 | 0 | D | S |
| 14 May, 2024 | Yujiro S Hata | Common Stock | A | 56,711 | $4.31 | 734,598 | D | M |
| 14 May, 2024 | Yujiro S Hata | Common Stock | D | 54,408 | $41.60 | 680,190 | D | S |
| 14 May, 2024 | Yujiro S Hata | Common Stock | D | 2,303 | $41.84 | 677,887 | D | S |
| 15 May, 2024 | Yujiro S Hata | Common Stock | A | 83,856 | $4.31 | 761,743 | D | M |
| 15 May, 2024 | Yujiro S Hata | Common Stock | D | 53,592 | $42.57 | 708,151 | D | S |
| 15 May, 2024 | Yujiro S Hata | Common Stock | D | 29,761 | $43.48 | 678,390 | D | S |
| 15 May, 2024 | Yujiro S Hata | Common Stock | D | 503 | $44.12 | 677,887 | D | S |
| 16 May, 2024 | Yujiro S Hata | Common Stock | A | 34,433 | $4.31 | 712,320 | D | M |
| 16 May, 2024 | Yujiro S Hata | Common Stock | D | 30,084 | $41.73 | 682,236 | D | S |